[Digikam-users] Too slow metadata writing with exiv2 and Nikon - how to solve?

[Gilles Caulier]

update Exiv2 to 0.20.0. recompile libkexiv2 and digikam...

Gilles Caulier

2010/6/8 Emil Persson <kodsmeden at gmail.com>:
> I am an fan of Digikam since 2 years and now I experience severe troubles
> downloading pictures from Nikon D5000 and metadata writing inside Digikam
> (1.2.0).
> Downloading takes ages (~3 minutes for 1 pic 6Mb), writing metadata to pic
> inside
> Digikam also takes unacceptably long time.
> This makes Digikam useless (too bad) and I really want to find out a
> solution.
> I know other posts have been discussing similar issues but I have not seen
> any
> finally solving answers.
>
> Parden my newbie language related to *nix operations and installations. I am
> learning.
> Maybe some of my questions should be placed in other forums but the problem
> IS related
> to Digikam since it uses exiv2 libraries. Being a Java-developer on mostly
> win32,
> *nix commands and it's universes are still terrifying to me, though
> tempting.
>
> My environment:
> 32bit 2.6.32-22-generic Ubuntu 10.04 LTS
> Nikon D5000 autodetected (mode PTP)
> Digikam (1.2.0)
> Exiv2 (0.19)
>
> On a fresh installation of Kubuntu (10.0.4) Digikam from KPackageKit is
> using exiv2 (0.19-1).
> The dependencies seems to be:
> Digikam uses libkexiv2-8 (4:4-4.2-Oubuntu4) uses libexiv2-6 (0.19-1) uses
> exiv2 (0.19-1)
>
> Found hints to a solution:
> - Exiv2 (0.20) has a bug fix (since 0.19) that solves the metadata/Nikon
> problem:
> http://www.exiv2.org/changelog.html and
> http://dev.exiv2.org/issues/show/0000677
> - Suggestions have been posted to downgrade from exiv2 (0.19) to exiv2
> (0.18.2)
> but this has not solved the problem according to:
> http://article.gmane.org/gmane.comp.kde.digikam.user/12166/match=exiv2+nikon
> - On the Digikam site it says that using an exiv2 lib > 0.11, but maybe this
> post
> is outdated, since exiv2 is in 0.20, and 0.19 obviously had Nikon related
> bugs.
> http://www.digikam.org/drupal/node/177
>
> Questions:
>
> 1. How can I install Digikam from KPackageKit and make sure it uses exiv2
> version 0.20? In my system 0.19 is the only available from KPackageKit.
>
> 2.1. Is the solution to compile Digikam myself and specify version 0.20 of
> Exiv2 in
> the compile?
>
> 2.2. If so, must I then also compile Exiv2 libraries (both libkexiv2,
> libexiv2 and exiv2)
> for the digikam build to succeed?
> [note. I tried compiling Digikam before I saw that KPackageKit distributed
> 1.2.0.
> The make and install was successful but when started Digikam did not show
> any pictures
> and there were no themes to choose from (probably I did something terribly
> wrong).]
>
> 2.3. Can I have multiple versions of Exiv2 installed on my Kubuntu (I don't
> want to
> compile every program that uses Exiv2 (a lot).
>
> 2.3.1 Is it at all possible to compile Digikam with exiv2 (0.20)? I suspect
> Digikam
> doesn't have a compiletime dependency to an explicit version of Exiv2,
> rather that it
> uses some version (> version n) available. Is it so?
>
> 2.3.1. If the above is possible - how should I proceed to install two
> versions? Where
> could the newer version be installed? Directions to head for?
> libkexiv2 seems to be installed in /usr/share/kde4/apps/libkexiv2/.. and
> /usr/lib/..
> Is there then a way to install a 'user-specific' version in another place
> and make sure
> Digikam uses this version? How to do this?
>
> 3. If downgrading exiv2 IS a solution (spite what was mentioned in post
> 12166),
> how can I then do that? If I uninstall the exiv2 libraries through
> KPackageKit my system
> becomes stalled (I tried). So - how to downgrade in a controlled manner,
> and, preferably,
> only for Digikam?
>
> 4. Is there some other way I can try to make Digikam play well with Exiv2? I
> have no clue.
>
> 5. Must I wait to use Digikam with my Nikon camera until Ubuntu releases a
> package
> upgrade for Exiv2? I hope not.
>
>
> best regards and thank you in advance
> /Emil Persson, Stockholm
>
> And you developer contributing to Digikam's source: Thank you for an awsome
> job!
>
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